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prop-115-v004: Registration of detailed assignment information in whois DB
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Proposer:       Ruri Hiromi
                hiromi@inetcore.com

                Tomohiro Fujisaki
                fujisaki@syce.net


1. Problem statement
--------------------

Recently, there are some cases where we need to get IP address
assignment information in more detail to specify users.

Without this information, operators cannot filter out specific address
range, and it might lead to 'over-filter' (i.e. filtering whole ISP's
address range). For example, IPv6 address assignment size to end users
may differ from ISPs (e.g. ISP A assigns /56 to their consumer users
and ISP B assigns /48), and also even in one ISP, from their customers
(e.g. /56 to consumer users and /48 to enterprise users).


2. Objective of policy change
-----------------------------

Many operators look a record when harmful behavior coming to their
network to identify its IP address confirming it can be filtered or
not.

The goal is providing more specific information to support these
actions.


3. Situation in other regions
-----------------------------

    No same regulation/discussion can be seen in other regions.


4. Proposed policy solution
---------------------------

 (Need to specify the solution)

A. Use whois database

- Use whois DB to provide 'assignment prefix size' information
  for specific IPv6 address ranges.

 Example:
    inet6num:       2001:db8:0100::/40
    netname:      EXAMPLE-0100
    descr:          INFRASTRUCTURE-CUSTOMER-ASSIGNMENT-BLOCK
    country:        JP
    admin-c:        JP00001017
    tech-c:         JP00000593
    Assignment-size:  /56
    remarks:        This information has been partially mirrored by APNIC from
    remarks:        JPNIC. To obtain more specific information, please use the
    remarks:        JPNIC WHOIS Gateway at
    remarks:        http://www.nic.ad.jp/en/db/whois/en-gateway.html or
    remarks:        whois.nic.ad.jp for WHOIS client. (The WHOIS client
    remarks:        defaults to Japanese output, use the /e switch for English
    remarks:        output)
    changed:        apnic-ftp@nic.ad.jp 20050809
    source:         JPNIC

- Possible to use 'remarks:' field for this purpose.

  Example:
    remarks:         </AssignemntSize /56>


B. Use Domain Name System

- Adding new resource record or using the TXT field.
- Reverse delegation tree might be used to provide this information.
- Need to discuss DNS experts.

C. Use IRR to provide assignment size information

- Adding new object, or modifying object attriute.


D. Use another database

- Use organizations' web page, another registration DB, etc. to
  provide assignment size information.


E. Use routing system

- Use routing protocol to provide assignment size information.


5. Advantages / Disadvantages
-----------------------------

Advantages:

 - operators can set filters by IP address based on correct assignment
   information base.

Disadvantages:

 - Registration rule will move to more strict manner.

 - Strict watch and control in registration of database records.

 - Additional record or option needs to be considered (depend on the mechanizm).


6. Impact on APNIC
------------------

TBD (depend on the mechanisms)


References
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    TBD